Chromatic-printing machine



v 2 Sheets-SheeL l. W. P.. KIDDER. Ghromati Printing Machine.

No, 224,449. ,7,11 Patented Feb. 10, 1880.

` UNITED STATES PATENT y Fries.

WELLINGTON P. K1DDER, 0F BOSTON, MASSACHUSETTS.

eHnoMAric-PRINTING MACHINE.'

SPECIFICATIN forming part of Letters-fatexit No. 2424,440,4dated February 1G, 1880.

' Application ined Muth 14, me.

-To all whom it may concern:

Be it known that I, WELLINeToNP. KIDDER, of Boston, in the county of Suifolk'and State of lliassachusetts, have invented certain new and useful lmprovemen ts in Printing-Presses, of which the following is a full, clear, concise, and exact description, reference being had to Athe'accompanying drawings, makinga part hereof.

elevations; Fig.v 3, a plan.

The other figures show details, and are re suitably supported in convenient proximity to the press.

Heretoforein all presses known to nie adapted t print a long strip of paper or other materal the paper was unwound from the drum or reel by the action of the feed, thedrum `or reel being one side of the platen and the feed the other side. The eifect of this is to throwv more strain upon the printed paper than is desirable, especially when the paper is of apoor quality; and one feature ofmy present invention is designed to're'niedy-this diculty, this feature of my invention consisting in the use of two feeds, one serying to draw the paper from the drum or reel or other supply, so as to have the paper slack between the first feed and the form, while the other feeds the paper to the action of the type by simply taking up the slack furnished by the rst feed.

The auxiliary feed in the drawings consists of the rollers a a, Pbetween which the strip of paper C is passed. The under roller, a, is revolved positively, while the upper one, a', may be revolved by friction only. To regulate the speed of this feed I use a conical pulley, a3, fast yto the shaft of roller a2 and belted to a conical pulley, af. The beltshipper a5 controls the position of Athe belt as, and thereby determines the quantity of paper fed by this auxiliary feed a' a2 in a giyen time. The object is to keep the paper slackbetween the auxiliary feed a. a2 and thema-in feed a" a", in 5o order to relieve the latter feed of the duty of In the drawings, Figures 1 and 2 are side Acauses the shoe b2, which is loosely supported upon its cam, to bin:a tightly upon the flange drawing the paper from the reel or other su p- Th auxiliary feed may be intermittent and be driven by mechanism like that used on the main feed; but with the conical pulleys a3 a4, belt a@ and belt-shipper a5, by a slight change in the position of the belt-shipper a5, the speed of the auxiliary feed can be regulated, and thus the paper be kept slack below the platen.

This combination of the conical pulleys a3 a4, belt as, and belt-shipper a5 with the feed a' n.2 also constitutes a part of my invention.

The strip of paper` C extends from the feed a az through suitable guides'and between the bed and platen through the main feed a" a, a? being aroll actuated positively, while o may be actuated by friction only. In a bed-andplaten press this roll a'l must bel actuated in-A termittently, and in order to effect this I have combined with'this feed aF as the clutch device shown in detail in' Figs.- 5 and 6.

The two wheels b and b are arranged as shown, b being fast to the shaft of roll a1, while b and the pinion formed on itshub are free to revolve on that shaft except when b and b are connec d together by the' clutch mounted on b. his clutch consists of lthe shoe b2, wide enough to engage withV the ange of wheel b', this shoe l1" being mounted on the cam b3, and the cam b3 being pressed in one direction by the spring b4. When, the motion of b' is such that the friction of its flangey -on the shoe b tends to move the shoe and its cani b. against the spring b, that spring yields-and thus the flange of b' slips over the shoe bz without moving wheel b. For greater certainty,

and also in order to prevent the wheel b moving `by its own'lnoinentum at the end of thefeed,` I use a brake, b5, on wheel b. (See Fig. 1.) But when-the motion of wheel b' is suchl that 9 the friction of its flange tends to move the shoe y b2 'and its cam bain the opposite direction-that is, in the same direction asthatin which they would -be moved by the spring b4-the cam of the-wheel v`b', and thus-clutches them to gether,'so that they move yas one wheeh- In practice the shoe bzis connected with cam 'bsbyadowebpin fitting loosely, but may, x

of course, be otherwise connected, provision l ro ther from or nearer to the axis around which wristpin b revolves.

This combination of 4feed ci a withA clutch b b and reciprocating rack b6 also constitutes one feature of my invention.

In some cases it is important to adj usty the motiouof the feed within very exact limits, andthe use of this rack o6 with a slide, b1", nicely fitted to the ruoli and secured to a sleeve, b", nicely fitted. toits stud, enables me to use zo adjustable stops (oneoi which is shown marked bg) on the rack on eachl side of slide b, These Vstops are capable of very accurate adjustment, and they serve to preyent any variations in the "feed arising from backlash or loosebearings.

'The cutters d ci' are mounted in a, frame which is rigidly connected `to or made in one piece with the frame oi the feed a' as.. yThe purpose of this is to allow the adjustinent of n the cutters without changing their'relation to 3o the feed.

It is necessary, in order to adapttlie press to various `sizes of sheets, that not .only the feed be adjustable, but also the position of the cutters in rela-tion to the form of type.

l 3,5 In the press shown the cutter-fra1ne and feedframe are in one piece, and in practice this double frame D is held to the table F by clamps, so thatV the frame D may be readily 'adjusted toward or from the press.

4o The movable cutter d is actuated through the connecting-rod d2, which connects the two bell-crank levers d di. The stud di', which supports the bell-crank cl, is secured adjustab y-to the-frame of the machine (by entering a vertical slot in theframe in a well-known way) in order that it may be raised or lowered to suit the position of the cutter. The bellcrank d* is actuated by the connectingrod d,

When the axis of d, the axis of wrist-pin d?,

5o and the end of cutter d are in line, the cutter d is at its highest position,` and the motion iniparted-to the cutter is very slight while the vaxis df moves across the line, the motion inl creasing rapidly as the motion of axis d gets f 5 5 lengthwise of that line. Either the stud d5 or disconnecting-mdd must be adjustable, as willbe clear from. the' only the lower part ofthe table and fornn diagram, Fig. 7V.v

When it is desired to roll up thh printed 6o strip (for example, in order to print u ated, but this strip Vwill extend from .the a" to the drum f. The paper must be, so wound upon this drum that it will always be 6 5 slack between the feed ar u' and the druxn 3 and to e'ct this I havedevised the cont ance now to b e described;

nbothsides) thc shears will not, of course, o r-- 4all kinds of two-colored printing can be The druln f is, mounted upon a shaft,f, so

that the motion of the shaft fwill bc imparted' to drum f through the friction-shoe f. This friction-smic is fast upon the friction-pulley f, which pulley is fast to drum f, f3 beingnn enlargement ci drum j', simply that the friction belt or brake j may act with greater power. This lbrake f4 is fast at oue'end to the liloor or bed of the machine and at the other end to theleve'r f5, which is suiiciently heavy at.

its outer enti to produce ya friction between the bralieif. .and l pulley fif sufficient to l prevent the drum f from revolving with its shaft f and thus 'prevent the winding up of the strip C on drum f. This causes the slack to accnmulate on the inner end ot' the leverf5 (which is made wide for this purpose) untily the weight of the accumulated slack is sucicnt to de press the inner end of the lever f5, thus raising its outer end, and .thereby relieving the pulley f3 from its bra-lie f1 to 4such an extent that the friction oi' shoe f2 is greater-than the friction between pulley f3 and its brake f4 when the drum fisrevolved by its shaft fj, and winds up the strip G until the weight of that part of it resting on the inner end'ol lever f5 is too small to counterbalance the lever-that is, until the outer end of lever f5 descends far enough to tighten the brake f on pulley f3 and stop the revolution of drum f.

This combination oidmm fand shaft f' with the two sets of friction devices, one acting to make the drum and its shaft revolve together, and the other con trolled automatically by the Weight of 'the slack acting to prevent the drum from revolvingV with its shaft until a given quantity ofthe strip is slack, also constitutes one feature of my invention.

Another feature of my invention relates to the use of two or more inking-rollers, each supplying' ink to a different part of the form;

vand .this part of my invention consists inthe combination, with the iuking-rollers, of guides so arranged that each` roller shall be held away from the inking-table and from the form during a portion ofits travel over the table. and form. Thus in the drawings-the roller hy is prevented by its guidesh from cominginto com tact with the lower part of the inking-table H and the lower; art of the form, but is allowed, the uides entering grooves h along the edge o` the table H and ofthe form, to :come into, contact with the upper part of the table andform. In like manner theinking roller ha isl prevented by its guides h' from con ing into contact with'ihe upper part of the' table and form, but comes .intocontact with A IDO IIC

AIn printing with two colors one will be dis- 'tributed to und applied by one of the rollers' and the other by the other, and. in y this way @nel the feed' bein so'rgulated that that portion of the strip ,v ich receives an impression. from the. lower'portion of the forni` shall receive second' impression from Vthe upper portion of the form. Thus, after that part of the form 1n the drawings', J is the roller-frame, jourl naled at j to the bed A. One part of this frame carries the' inkinglrollers, as shown. The connecting-mj', extending from platenB to the faipe J, causes the frame to rock on its journal. the bed vibrates `toward and from the platen this rocking of frame J oarries the rollers over tine* inking-table and the form.

Another important feature of my invention consists in the combination sof a bed-and platen printing-press and a ruling apparatus, s y arranged togetherA that 'the intermittent feed of the press shall also act 'as the feed of the ruling apparatus, the purpose of this part of my invention being to rule letterand note sheets, billlheads, 8vo., at the saine tine that theyI are printed. v In tlie drawings, K inrlieatesa rulingapparatus, too well-known to need description. This apparatus is: best applied so that the poin'ts ofthe ruling-pins shall rest on or near the feed-roll, as shown in the drawings.

This combination gives a new capacity to mypresal and enables avery large class of Work to be done yupon. it which before my invention required` two separate machines, one for printing, the other for ruiing.

By means of the printing-press, ruling apparatus, feed, and cutters, a long` strip of paper can be printedl ruled, andcut into sheets atthe same operation; and this combination also constitutes an important part of my invention. f

-What claim as my invention isl. The eombination'of the two feeds a" a2 and al a8, in the manner described, and mechanism, substantially as described; for driving the two feeds at diiiereht speeds,I the first feed rawing the paper from the drum or other supply and slacking it between the first feed e. In combination, feed-rolls al aand windving-npv devine f by means of automatic meoh anism 'operated 'by the weight of the slack, substantially suoli as is .above described, the weight of the slack, when in exoess'of the liesired amount, acting to permit drum f to `revolve. v

WELLINGTN P. 'KDDER l- Yinesses:

' J. E. MAYNADmR, .Y

GEORGE 0. G. Gotta. 

